The Weather Lab models don’t seem to agree about much when it comes to our chances for snow this week.

Take the GFS. Uncertain, quirky and mercurial. Not really able to settle on a particular track for the surface low. Not sure of two split storm centers or one. If we are to believe the GFS, it will snow, some, on Friday and into Saturday. The split pattern of two upper low centers usually produces lighter snow amounts for southern Minnesota, with more up north in the northern stream and more to the south.

Then there’s the NAM. Bold, certain, loud and quite possibly wrong. It keeps the storm center more compact and together as it tracks into Iowa late Friday night. This kind of a solution generally produces a band of heavier snow in southern Minnesota and western Wisconsin.

About the blogger

Paul Huttner is chief meteorologist for Minnesota Public Radio. Huttner has worked TV and radio stations in Minneapolis, Tucson and Chicago. Paul is a graduate of Macalester College in St. Paul and holds a bachelor’s degree in geography with an emphasis in meteorology.